Another CTC Surfaces In WI - Page 3 - Videokarma.org TV - Video

DaveWM · #31 02-02-2011, 09:47 PM

wow, that has great color and lineairity.

Kevin Kuehn · #32 02-02-2011, 09:56 PM

They are shockingly colorful. I watched a 60's RCA color set as a child, but I had no recollection of how well these worked until a couple of weeks ago. That was when I fired the CTC11 up.

Kevin

miniman82 · #33 02-02-2011, 09:58 PM

You don't take the wire off the tube, you take the anode wire out of the HV connection on the HV rectifier cup. Rotate the round cover on the cage so you can get a needle nose in there, then give the anode wire a tug and it should just come right out.

Kevin Kuehn · #34 02-02-2011, 10:02 PM

You just pull straight out on it, you don't need to pinch it and wiggle it out like on a CRT?

Kevin

miniman82 · #35 02-02-2011, 10:09 PM

Nope, it just sits in the rectifier cup, no clip. Don't try to pull it out from the front of the cage though, it usually takes a little turn from the top of the cage to get to the cup. That's why you have to reach in there and pull it off the cup, but make sure you either discharge first or use an insulated tool!

Kevin Kuehn · #36 02-02-2011, 10:25 PM

Thanks for the help. I'll go see if I can hurt myself.

Kevin

miniman82 · #37 02-02-2011, 10:29 PM

It'll hurt if it bites you, but it won't kill you. lol

droptop · #38 02-03-2011, 08:24 PM

Kevin,
It looks very promising. Your results now have me wanting to check out my 10. I just might bring it up slowly this weekend to see what happens. The seller told me they had it powered up and got “colored snow” so maybe it will come to life. I’ll let you know.

My CTC 7 sat for nearly two years before I got the chance to restore it. I noticed the glass looked dark but figured it was dust accumulation. Not until I removed it did I realize it was tinted.

My 10 has the same appearance so I’m guessing they were tinted. I saw a mention in an older thread (that I can’t find now) about tinted glass being used to keep room light and glare from the surface of the tube because of the lack of brightness of the CRT IIFC.

By all means discharge the HV cup before reaching in there. I leave it grounded with a clip lead as a smaller charge can build up again in my experience.

Quote:

Originally Posted by miniman82

It'll hurt if it bites you, but it won't kill you. lol

And it will leave a lasting impression- usually on your elbow or head….

Rick

DaveWM · #39 02-03-2011, 11:08 PM

yea its not the shock so much, but rather what sharp things that you get cut on as you jerk you hand away....

Kevin Kuehn · #40 02-03-2011, 11:28 PM

I got the HV wire unplugged last night without any injury. I had a glove on, plus I used the needle nose. I now have the chassis down in my basement shop, but haven't gotten around to looking at it yet. I sure wish there were a small color test CRT a guy could plug into one of these while powering up on the bench.

Kevin

miniman82 · #41 02-03-2011, 11:38 PM

You mean like a Sylvania Check-a-Color? I have one of those.

Kevin Kuehn · #42 02-04-2011, 12:26 AM

Quote:

Originally Posted by miniman82

You mean like a Sylvania Check-a-Color? I have one of those.

Nice! That must make life a lot easier. Did RCA make something similar?

Kevin

ChrisW6ATV · #43 02-04-2011, 01:46 AM

Yes, these devices are generically called "test jigs". I also have a Sylvania Chek-A-Color, model CK3000. They usually include adapter cables to connect to the yoke, CRT, HV, and ground of the chassis, and you plug in an adapter to replace the convergence yoke onto the chassis. One RCA model is the 10J106. The newer RCAs have a 19" CRT, and the Sylvanias have a 13" CRT that I have seen. With the adapters, you can connect any one of these to any brand of color TV chassis. In fact, the RCA and Sylvania jigs use the same adapters (as newer TVs were sold, both companies made new adapters for them, into at least the late 1980's).

Kevin Kuehn · #44 02-04-2011, 10:30 AM

Well, now I wan't one of these test jigs. Just for fun.

Kevin

DaveWM · #45 02-04-2011, 10:48 AM

I got one, its an RCA deal, has an impedence selector to match the yoke to the TV, no dynamic convergence (coils there, just not used), a 30kv analog meter. and a bunch of adapters. Never used it as not sure how to figure which adapter to use on different sets. It missing the entire back half of the plastic enclosure, making it somewhat fragile. Seem like it could be useful, but I think I would need to build a shelf to mount it above the bench just to get it out of the way (19' pretty big and heavy).

You service guys that used these back in the day, did you have them on roll around carts or just leave them around on the bench? Did they really get used a lot?